Note: this is essentially the Arma version of this feature request.
Most VoIP systems, like Discord or Teamspeak, allow you to configure a delay between when you release the push-to-talk key and when the push-to-talk activation actually ends. This is very useful because otherwise it's very easy to accidentally cut off the end of your transmission.
Arma 3 has no such delay available. I'd like to have one. Speaking as someone who often cuts off the end of their transmission.